The 13 striking kiln workers at Hanson Brick in Whittlesey, near Peterborough, have entered their sixth week of continuous strike action this week.
The members of Unite and GMB have been picketing since early April after bosses imposed changes on their terms and conditions.
They would have lost four holidays a year under the new rules.
Imperialist tensions are heating up
More Islamophobia in the Tory party